fasciculation
/fəˌsɪkjʊˈleɪʃən/noun
1
- Medicine a brief spontaneous contraction affecting a small number of muscle fibres, often causing a flicker of movement under the skin. It can be a symptom of disease of the motor neurons.【医】肌束震颤, 束颤, 肌纤维自发性收缩。
2
- mass noun chiefly Biology arrangement in bundles【主生】成束现象, 束化（现象）。